2003 DODGE RAM lock

ENGINE CONTROL MODULE - C2 (DIESEL) - 50 WAY
CAV CIRCUIT FUNCTION
28 D25 18VT/YL PCI BUS
29 - -
30 A140 16DG/WT FUSED B(+)
31 - -
32 Y135 18LG/BK FUSED IGNITION SWITCH OUTPUT (RUN-START)
33 - -
34 - -
35 K68 18BR/LG INLET AIR PRESSURE SENSE
36 V32 18YL/RD SPEED CONTROL SUPPLY
37 K29 18WT/PK BRAKE SWITCH SENSE
38 - -
39 - -
40 A140 16BG/WT FUSED B(+)
41 C13 18DB/OR A/C CLUTCH RELAY CONTROL
42 - -
43 Y1 18LG PARK LOCKOUT SOLENOID CONTROL
44 - -
45 - -
46 V37 18RD/YL S/C SWITCH SIGNAL
47 K118 18PK/YL BATTERY TEMPERATURE SENSOR SIGNAL
48 - -
49 Z816 16BK/TN GROUND
50 Z816 16BK/TN GROUND
ENGINE COOLANT TEMPERATURE SENSOR (3.7L/4.7L/5.7L) - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 K4 18BK/LB SENSOR GROUND
2 K2 18TN/BK ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
2 K2 18TN/BK (4.7L/5.7L) ECT SIGNAL
ENGINE COOLANT TEMPERATURE SENSOR (DIESEL)-2WAY
CAV CIRCUIT FUNCTION
1 K104 18RD/WT SENSOR GROUND
2 K2 18TN/BK ENGINE COOLANT TEMPERATURE SENSOR SIGNAL
8W - 80 - 56 8W-80 CONNECTOR PIN-OUTSDR

INSTRUMENT CLUSTER C1 - GRAY 26 WAY
CAV CIRCUIT FUNCTION
1 F35 18RD FUSED B(+)
2 Y200 18TN/VT DOOR LOCK DRIVER RIGHT DOORS
3 Y204 18OR/WT BTSI SOLENOID CONTROL
4- -
5- -
6- -
7- -
8- -
9- -
10 G10 20LG/RD SEAT BELT SWITCH SENSE
11 Y156 18TN/WT DOOR UNLOCK DRIVER RIGHT DOORS
12 Y201 18TN/OR DOOR UNLOCK DRIVER LEFT REAR
13 Z105 18TN/BK GROUND
14 F35 18RD FUSED B(+)
15 Y157 18TN/PK DOOR LOCK DRIVER LEFT DOORS
16 - -
17 X3 20BK/RD HORN SWITCH SENSE
18 G75 20TN DRIVER DOOR AJAR SWITCH SENSE
19 G77 20VT/OR LEFT REAR DOOR AJAR SWITCH SENSE
20 G76 20TN/YL RIGHT REAR DOOR AJAR SWITCH SENSE
21 G74 20TN/RD PASSENGER DOOR AJAR SWITCH SENSE
22 - -
23 L50 18WT/TN BRAKE LAMP SWITCH OUTPUT
24 G26 20LB KEY-IN IGNITION SWITCH SENSE
25 P55 18DB DOOR UNLOCK DRIVER LEFT FRONT
26 - -
INSTRUMENT CLUSTER C2 - GRAY 16 WAY
CAV CIRCUIT FUNCTION
1 Y109 20VT/OR WASH/BEAM SELECT SWITCH FEED
2 P96 20WT/LG PASSENGER DOOR LOCK SWITCH MUX
3 P97 20WT/DG DRIVER DOOR LOCK SWITCH MUX
4 Y111 20VT/WT PANEL LAMPS DIMMER SIGNAL
5 Y126 20VT/YL HEADLAMP SWITCH RETURN
6 G72 20DG/OR PASSENGER CYLINDER LOCK SWITCH MUX
7 G73 20LG/OR DRIVER CYLINDER LOCK SWITCH MUX
8 Y110 20WT/VT TURN LAMPS SWITCH FEED
9- -
10 - -
11 V8 20VT INTERMITENT WIPER SWITCH SENSE
12 X20 20GY/WT (PREMIUM) RADIO CONTROL MUX
13 - -
14 Y193 20YL/RD TRANS RANGE SENSOR MUX
15 - -
16 - -
8W - 80 - 68 8W-80 CONNECTOR PIN-OUTSDR

VEHICLE SPEED SENSOR (DIESEL)-3WAY
CAV CIRCUIT FUNCTION
1 K6 18VT/WT 5 VOLT SUPPLY
2 K167 18BR/TL ACCELERATOR PEDAL POSITION SENSOR GROUND
NO. 1
3 G17 18WT/TN SPEEDOMETER SIGNAL
VISTRONIC FAN DRIVE (DIESEL)-6WAY
CAV CIRCUIT FUNCTION
1 Y1 18LG PARK LOCKOUT SOLENOID CONTROL
2 K4 18BK/LB SENSOR GROUND
3 Y5 18OR FAN SPEED
4- -
5 Y3 18WT SENSOR SUPPLY
6 F15 20DB FUSED IGNTION SWITCH OUTPUT (RUN)
WASHER FLUID LEVEL SWITCH - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 Y137 20VT/LB EXCEPT 8.0L/DIESEL SENSOR GROUND
2 G29 20BK/TN WASHER FLUID SWITCH SENSE
2 Y137 20VT/LB 8.0L/DIESEL SENSOR GROUND
WASHER PUMP MOTOR-FRONT - BLACK 2 WAY
CAV CIRCUIT FUNCTION
1 Z216 20BK/VT GROUND
2 V10 20BR WASHER PUMP MOTOR CONTROL
WATER IN FUEL SENSOR (DIESEL)-2WAY
CAV CIRCUIT FUNCTION
1 K104 18RD/WT SENSOR GROUND
2 G20 18VT/YL IGNITION SWITCH SENSE
DR8W-80 CONNECTOR PIN-OUTS 8W - 80 - 107

CONNECTOR NAME/NUMBER COLOR LOCATION FIG.
Blower Motor BK Behind Right Side of Instrument
PanelN/S
Blower Motor Resistor Block BK Behind Right Side of Instrument
PanelN/S
Brake Lamp Switch BK Top of Brake Pedal Arm 32, 37, 39
Brake Provision-Electric Rear of Engine 26, 27
Brake Transmission Shift Interlock
SolenoidBK Near Steering Column 33, 37, 39
C100 BK Near G107 21, 22, 23, 24, 25
C102 Near Integrated Power Module 28
C106 (5.7L) BK Left Rear Engine 5
C107 (5.7L) BK Left Rear Engine 5
C112 (Diesel) BK Near T/O for Water In Fuel Sensor N/S
C113 BK Left Side Engine 10
C114 BK Left side Engine 10
C115 (Diesel) BK Left Side Engine 10
C130 BK Left Rear of Engine 21, 22, 23, 24, 26
C200 GY Under Instrument Panel 40
C201 WT Near Left Instrument Panel
Speaker37, 39
C205 BK Left Rear Side of Engine
CompartmentN/S
C206 BK Right Instrument Panel 37, 40, 46
C216 BK Middle Left Frame 26, 28, 48
C217 BK Middle Left Frame 26, 28, 37, 48
C218 WT Left Side of Instrument Panel 26, 27, 41, 44
C219 GY Left Side of Instrument Panel 26, 27, 33, 37, 39, 41
C220 WT Left Side of Instrument Panel 37, 39, 41
C301 WT Right Kick Panel 41
C302 BK Left Front Door 41
C304 WT Left Side of Instrument Panel 42, 44, 45
C305 BK At Left Front Door 42, 44, 45
C306 WT Middle Front of Door 43, 45
C307 BK Near Right License Lamp 48, 49
C308 WT Under Instrument Panel 40, 41
C309 WT Left Side of Instrument Panel 39, 41, 44, 45
C310 BK Left Rear of Frame 48, 49
C311 BK Left Rear of Frame 44, 45
C312 WT Under Seat N/S
C313 DK GY At Driver Seat N/S
C314 DK GY At Driver Seat N/S
C315 DK GY At Driver Seat N/S
C316 BK At Passenger Seat N/S
8W - 91 - 2 8W-91 CONNECTOR/GROUND/SPLICE LOCATIONDR
CONNECTOR/GROUND/SPLICE LOCATION (Continued)

CONNECTOR NAME/NUMBER COLOR LOCATION FIG.
C317 BK At Passenger Seat N/S
C319 BK Bottom Left of Left Door N/S
C322 DK GY Left Rear of Frame N/S
C323 BK Left Side of Instrument Panel N/S
C327 BK Right Rear Fender 48, 49
C328 BK Left Rear Fender 48, 49, 50
Camshaft Position Sensor GY Right Front Side of Engine 3, 6, 8, 9
Capacitor Left Rear of Engine Compartment N/S
Center High Mounted Stop
Lamp/Cargo LampBK Rear of Cab 47
Cigar Lighter Outlet NAT Rear of Cigar Lighter 34, 37, 38
Clearance Lamp No. 1 BK Left Roof 46
Clearance Lamp No. 2 BK Left-Center Roof 46
Clearance Lamp No. 3 BK Center Roof 46
Clearance Lamp No. 4 BK Right-Center Roof 46
Clearance Lamp No. 5 BK Right Roof 46
Clockspring C1 BK Steering Column 33
Clockspring C2 YL Steering Column 33
Clockspring C3 BK Steering Column N/S
Clockspring C4 BK Steering Column N/S
Clutch Interlock Brake Switch BK At Clutch Pedal 26, 27
Coil On Plug No.1 BK Left Top Side of Intake Manifold 4
Coil On Plug No.2 BK Right Top Side of Intake Manifold 3
Coil On Plug No.3 BK Left Top Side of Intake Manifold 4
Coil On Plug No.4 BK Right Top Side of Intake Manifold 3
Coil On Plug No.5 BK Left Top Side of Intake Manifold 4
Coil On Plug No.6 BK Right Top Side of Intake Manifold 3
Coil On Plug No.7 BK Left Top Side of Intake Manifold 4
Coil On Plug No.8 BK Right Top Side of Intake Manifold 3
Compass/Mini-Trip Computer BK In Overhead Console N/S
Condenser Fan BK Near Condenser 26, 27
Controller Anti-Lock Brake C1 BK Left Fender Side Shield 26, 27, 28
Controller Anti-Lock Brake C2
(ABS)BK Left Fender Side Shield 26, 28
Crankshaft Position Sensor BK Right Rear of Engine Block 3, 6, 8, 9
Cylinder Lock Switch-Driver
(Premium)BK In Left Front Door 42
Cylinder Lock Switch-Passenger
(Premium)LT GY In Right Front Door N/S
Data Link Connector BK Left Bottom of Instrument Panel 37, 39
Data Link Connector - Engine
(Diesel)BK Near T/O for Water In Fuel Sensor N/S
Dome Lamp BK Center of Headliner N/S
DR8W-91 CONNECTOR/GROUND/SPLICE LOCATION 8W - 91 - 3
CONNECTOR/GROUND/SPLICE LOCATION (Continued)

CONNECTOR NAME/NUMBER COLOR LOCATION FIG.
Door Ajar Switch-Driver (Base) BK Left Front Door 42
Door Ajar Switch-Left Rear (Base) BK Left Rear Door 43
Door Ajar Switch-Passenger (Base) BK Right Front Door N/S
Door Ajar Switch-Right Rear (Base) BK Right Rear Door 43
Door Lock Motor/Ajar Switch-Driver
(Except Base)BK Left Front Door 42
Door Lock Motor/Ajar Switch-Left
Rear (Except Base)BK Left Rear Door 43
Door Lock Motor/Ajar Switch-
Passenger (Except Base)BK Right Front Door N/S
Door Lock Motor/Ajar Switch-Right
Rear (Except Base)BK Right Rear Door 43
Door Lock Switch-Passenger BL In Right Front Door N/S
Driver Airbag Squib BK In Steering Column N/S
Driver Blend Door Actuator (Dual
Zone)BK Right Side of HVAC N/S
Driver Door Module C1 BL In Left Front Door 42
Driver Door Module C2 BL In Left Front Door 42
Engine Control Module C1 BK Left Engine 10
Engine Control Module C2 BK Left Engine 10
Engine Coolant Temperature
SensorBK Near Generator 4, 7, 9
Engine Oil Pressure Sensor BK Lower Left Side of Engine 4, 6, 8, 9, 11
Evap/Purge Solenoid BK Left Fender Side Shield 26, 28
Evaporator Temperature Sensor BK Right Side of HVAC N/S
Fog Lamp-Left WT Left Front Facia N/S
Fog Lamp-Right WT Right Front Facia N/S
Fuel Control Actuator (Diesel) BK Left Rear Engine 23
Fuel Heater (Diesel) BK Left Side Engine 10
Fuel Injector No.1 BK At Fuel Injector 4, 8
Fuel Injector No. 2 BK At Fuel Injector 3, 7
Fuel Injector No. 3 BK At Fuel Injector 4, 8
Fuel Injector No. 4 BK At Fuel Injector 3, 7
Fuel Injector No. 5 BK At Fuel Injector 4, 8
Fuel Injector No. 6 BK At Fuel Injector 3, 7
Fuel Injector No. 7 BK At Fuel Injector 4, 8
Fuel Injector No. 8 BK At Fuel Injector 3, 7
Fuel Pump Module LT GY At Fuel Tank 48
Fuel Pump Motor (Diesel) BK Left Side Engine 10
Generator BK Front of Engine 4, 6, 7, 10
Glove Box Lamp and Switch BK At Glove Box 37, 40
Governor Pressure Sensor BK Left Rear of Transmission N/S
Headlamp Switch BK Left Side of Instrument Panel 34, 37, 39
Headlamp-Left BL At Headlamp 26, 30, 31
8W - 91 - 4 8W-91 CONNECTOR/GROUND/SPLICE LOCATIONDR
CONNECTOR/GROUND/SPLICE LOCATION (Continued)

SPECIAL TOOLS
POWER DISTRIBUTION SYSTEMS
CIGAR LIGHTER OUTLET
DESCRIPTION
On models equipped a cigar lighter outlet is
installed to the left of the center stack area in the
lower instrument panel. The cigar lighter outlet is
secured by a snap fit within the bezel.
The cigar lighter outlet, plastic cap and the knob
and heating element unit are available for service
replacement. These components cannot be repaired
and, if faulty or damaged, they must be replaced.
OPERATION
The cigar lighter consists of two major components:
a knob and heating element unit, and the cigar
lighter base or outlet shell. The receptacle shell is
connected to ground, and an insulated contact in the
bottom of the shell is connected to battery current.
The cigar lighter receives battery voltage from a fuse
in the junction block when the ignition switch is in
the Accessory or Run positions.
The cigar lighter knob and heating element are
encased within a spring-loaded housing, which also
features a sliding protective heat shield. When the
knob and heating element are inserted in the outlet
shell, the heating element resistor coil is grounded
through its housing to the outlet shell. If the cigar
lighter knob is pushed inward, the heat shield slides
up toward the knob exposing the heating element,
and the heating element extends from the housing
toward the insulated contact in the bottom of the
outlet shell.
Two small spring-clip retainers are located on
either side of the insulated contact inside the bottom
of the outlet shell. These clips engage and hold the
heating element against the insulated contact longenough for the resistor coil to heat up. When the
heating element is engaged with the contact, battery
current can flow through the resistor coil to ground,
causing the resistor coil to heat.
When the resistor coil becomes sufficiently heated,
excess heat radiates from the heating element caus-
ing the spring-clips to expand. Once the spring-clips
expand far enough to release the heating element,
the spring-loaded housing forces the knob and heat-
ing element to pop back outward to their relaxed
position. When the cigar lighter knob and element
are pulled out of the outlet shell, the protective heat
shield slides downward on the housing so that the
heating element is recessed and shielded around its
circumference for safety.
DIAGNOSIS AND TESTING - CIGAR LIGHTER
OUTLET
For complete circuit diagrams, refer toWiring
Diagrams.
(1) Check the fused B(+) fuse in the integrated
power module. If OK, go to Step 2. If not OK, repair
the shorted circuit or component as required and
replace the faulty fuse.
(2) Turn the ignition switch to the Run position.
Check for battery voltage at the fused B(+) fuse in
the integrated power module. If OK, go to Step 3. If
not OK, repair the open or short as required.
(3) Remove the cigar lighter knob and element
from the cigar lighter outlet shell. Check for continu-
ity between the inside circumference of the cigar
lighter outlet shell and a good ground. there should
be continuity. If OK, go to Step 4. If not OK, go to
Step 5.
(4) Turn the ignition switch to the Run position.
Check for battery voltage at the insulated contact
located at the back of the cigar lighter outlet shell. If
OK, replace the faulty cigar lighter knob and ele-
ment. If not OK, go to Step 5.
(5) Turn the ignition switch to the Off position.
Disconnect and isolate the battery negative cable.
Check for continuity between the ground circuit cav-
ity of the cigar lighter wire harness connector and a
good ground. There should be continuity. If OK, go to
Step 6. If not OK, repair the open ground circuit to
ground as required.
(6) Connect the battery negative cable. Turn the
ignition switch to the Accessory or Run positions.
Check for battery voltage at the fused B(+) circuit
cavity of the cigar lighter wire harness connector. If
OK, replace the faulty cigar lighter outlet. If not OK,
repair the open fused B(+) circuit to the integrated
power module fuse as required.Terminal Pick Kit 6680
8W - 97 - 2 8W-97 POWER DISTRIBUTIONDR
POWER DISTRIBUTION (Continued)

(4) Remove the integrated power module retaining
bolt and screw (Fig. 2).
(5) Grasp the integrated power module with two
hands and slide the assembly in the direction shown
(Fig. 3) to free the module from its mounting bracket.
Position the assembly upside down to access the elec-
trical connectors located on the bottom of the unit.
(6) Disconnect the electrical connectors by depress-
ing the locking tab and rotating the connector arm
outboard, until the connector is free from the module
assembly. Be certain to pull the connectors straight
off.
(7) Position the integrated power module on a
bench and remove the four front control module
retaining screws.
(8) Disconnect the front control module by pulling
it straight off the integrated power module.
INSTALLATION
(1) Connect the front control module by pushing it
straight on the integrated power module electrical
receptacle.
(2) Install the four front control module retaining
screws. Torque to 30 in. lbs. +/-5.
NOTE: Integrated power module electrical connec-
tors are color coded to ease location reference (Fig.
4).
(3) Connect the electrical connectors by pushing
straight on and rotating the connector arm inboard,
until the connector is firmly locked in place on the
module assembly.(4) Grasp the integrated power module with two
hands and install the assembly on the battery tray
(Fig. 5).
(5) Install the integrated power module retaining
bolt and screw.
(6) Connect the gray connector on the integrated
power module housing.
(7) Install the B+ terminal cable and nut on the
integrated power module B+ terminal. Snap the
cover in place.
(8) Connect the negative and positive battery
cables.
FRONT CONTROL MODULE
DESCRIPTION
The Front Control Module (FCM) is a micro con-
troller based module located in the left front corner
of the engine compartment. On this model the inte-
grated power module must be positioned aside in
order to access the front control module. The front
control module mates to the power distribution cen-
ter to form the Integrated Power Module (IPM). The
integrated power module connects directly to the bat-
Fig. 3 REMOVING INTEGRATED POWER MODULE
Fig. 4 INTEGRATED POWER MODULE ELECTRICAL
CONNECTIONS
1 - RETAINING LATCH
2 - GRAY CONNECTOR
3 - GREEN CONNECTOR
4 - GREEN CONNECTOR
5 - BLUE CONNECTOR
6 - WHITE CONNECTOR
7 - BLACK CONNECTOR
8 - BLACK CONNECTOR
8W - 97 - 4 8W-97 POWER DISTRIBUTIONDR
INTEGRATED POWER MODULE (Continued)